<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Bootstrap Site</title>
  <link rel="stylesheet" href="../bootstrap5.1_lib/bootstrap.min.css" crossorigin="anonymous">
  <script src="../bootstrap5.1_lib/bootstrap.bundle.min.js" crossorigin="anonymous"></script>
  
</head>
<body>
<h1>Hello-Bootstrap</h1>
<h1>Hello World!</h1>
<a class="btn btn-danger btn-sm " href="#" role="button">
    hello button!!
</a>
<a class="btn btn-primary btn-sm " href="#" role="button"> BootStrap5 的按钮测试！！！ </a>
</body>
</html>